“The 1970s Buzz Tone/Volume Expander built by UMI International, Farmingdale, NY. Killer fuzz tone.”
VOLUME : Is always active and provides a volume boost type of control. Really cranks (EXPANDS) the volume when you turn it up.
CONTOUR : Seems to mix the clean and buzz sounds for more or less distortion.
BUZZ : Adjusts the intensity of the distortion from slight to all fuzz.
FOOT SWITCH : Turns on and off the Buzz (Fuzz) Tone.
BATTERY CONDITION : This meter lets you know if your battery needs changing.